Shure-M63 mix 电路图.pdf

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1、2 2 2 H A R T R E Y A V E . , E V A N S T O N , I L . 6 0 2 0 4 U . S . A . A R E A C O D E 3 1 2 / 3 2 8 - 9 0 0 0 C A B L E : S H U R E M l C R O General: The Shure Model M63 Audio Master is a unit designed to give maximum flexibility in the con- trol of volume, bass response, treble response, and

2、 high and low frequency roll-off. The Model M63 works ideally as a Master Control Center when used in conjunction with the Shure Model M68 Series of Microphone Mixers. The M63 provides a means to equalize sound systems for correction of room acoustics, to reduce feedback, to provide special sound ef

3、fects, to reduce stand and stage noise and for tape recording. The Model M63-2E Audio Master is similar to Model M63 except that it is designed to be connected to a 220-260 volt AC power line. All information on the data sheet for the Model M63 applies, except for those references to AC operating vo

4、ltage and power line cord. The Audio Master features: ? Five types of outputs 600 ohms balanced line level High impedance, high level High impedance microphone level Low impedance microphone level, balanced Headphone jack for monitoring ? Inputs for two driving sources ? A VU meter to monitor audio

5、level ? Continuously variable high pass and low pass 6 db per octave filters ? Bass and treble tone controls Controls, Connections and Operation INPUTS The two high impedance inputs (phono jacks) marked HIGH LEVEL INPUTS are designed to accept high level signals from a microphone mixer such as the S

6、hure M68, M68RM, etc.), tape recorder, AM-FM tuner, or output from Shure Model A68P Phonograph Preamplifier (accessory). To use with the Shure M68 Microphone Mixer series, connect the AUX. HIGH LEVEL OUTPUT on the mixer to the input of the M63 with a shielded cable having a male phono plug on each e

7、nd (such as the Shure A68SC). Set the MASTER volume control on the mixer to approximately 6 and use the VOLUME control on the M63 to adjust the overall level. Although not specifically designed for use with the Shure M67, it may be used in conjunction with the M67 in the following manner: connect a

8、shielded single conductor cable with a ” phone plug on one end and a phono plug on the other from the head- phone output of the M67 to the M63 input. To obtain good volume control action from M63, install a 180-ohm resistor from tip to sleeve in the phone plug and use the M63 volume control to adjus

9、t output to desired level. Copyright 1973, Shure Brothers Inc. 27A909 (MH) OUTPUTS Microphone The receptacle marked MICROPHONE LEVEL OUTPUT is a dual impedance output selected by the switch above the receptacle. This output is designed to work into a balanced 25 to 250 ohm in- put, or, with the MICR

10、OPHONE IMPEDANCE selector switch in the Hi position, into an un- balanced high impedance microphone input on an amplifier or tape recorder. The receptacle is a professional three-pin male audio connector de- signed to mate with Cannon XL series, Switchcraft A3 (Q.G.) series or equivalent connector (

11、Shure Part 95A548). See Figure A for output receptacle connections. Line The line output (binding posts) is on the rear panel and is designated 600 OHM BALANCED LINE OUTPUT. These terminals are numbered “3” and “2” and are in phase with correspondingly num- bered pins in the microphone output connec

12、tor. The adjacent ground terminal corresponds to pin I. While the line output may be used to drive lines of various impedances (150 ohms or greater), the VU meter is calibrated for use with a 600 ohm terminated line. Auxiliary The phono jack marked AUXILIARY HI IMP OUT- PUT is a high-impedance, high

13、-level output de- signed primarily to feed a power amplifier re- quiring .5 to 2 volts, or the auxiliary or tuner input of an amplifier or tape recorder. NOTE: The microphone, line and auxiliary outputs may be used simultaneously if desired, to provide an isolated PA feed or to drive different piece

14、s of equipment. Headphone output The headphone output on the rear panel is desig- nated HEADPHONES. A two-circuit phone jack is used to provide a choice of level for different headphone impedances. Normally, a single-circuit plug should be used. If inserted only partially (to the first detent), the

15、available voltage is approxi- mately 0.25 volts; the second position will provide approximately 0.50 volts across 1000-ohm head- phones at +4 dbm (0 VU) line output. Crystal head- phones may be used, but the level will be the same in either jack position. If stereo phones are used, the two-circuit p

16、lug may be inserted completely (to second position) and output will appear in both phones. Printed in U.S.A. RadioFans.CN 收音机爱 好者资料库 MICROPHONE OUTPUT PLUG CONNECTION. FIGURE A SPECIFICATIONS Specifications at 120 volts AC (M63) or 240 volts AC (M63-2E), 60 Hz Line Voltage. Frequency Response: 2 db

17、from 20 to 20,000 Hz (all controls flat) Voltage Gain: (outputs terminated as noted, others open; volume and level control max.) Line Output: 38.5 db (600 ohm load) Aux. Output: 39.0 db (47 K ohm load) Hi-Imp. Mic. Output: -1.0 db (33 K ohm load) Lo-Imp. Mic. Output: -21.0 db (150 ohm load) Tone Con

18、trols: Bass: +14, -19 db at 100 Hz Typ. Treble: + 16, -19 db at 10 K Hz Typ. Filters: Hi-Cut and Lo-Cut 6 db per octave, con- tinuously variable -3 db point. Noise Output (Line with 600 ohm load): Volume Control min.: 74 db below +8 dbm, 20 Hz - 20 K Hz 81 db below +8 dbm, 300 Hz - 20 K Hz Volume Co

19、ntrol max., 4.7 K ohm source: 68 db below +8 dbm, 20 Hz - 20 K Hz 71 db below +8 dbm, 300 Hz - 20 K Hz Distortion: Under 1% T.H.D. at +8 dbm output Clipping Level: +18 dbm (600 ohm load) VU Meter: Calibrated for 600 ohm line termination. 0 V U = +8 dbm 1 db fixed; or 0 V U = +4 dbm; output may be at

20、tenuated by 20 db. Inputs: Two, mixing. Impedance 50 K ohms nominal. No amplification precedes VOLUME con- trol, so that high-level input signals cannot cause overloading. Outputs: 600 ohm line: Balanced and floating, 150 ohms minimum load, 125 ohms actual internal imped- ance. Will operate with up

21、to 100 ma. DC through transformer for driving telephone lines. Auxiliary Hi-Imp.: Unbalanced, 4.7 K ohms internal impedance. For driving high-level, high imped- ance inputs. Microphone Hi-Imp.:Unbalanced, I K ohm in- ternal impedance. For driving medium-level high impedance microphone inputs. Microp

22、hone Lo-Imp.: Balanced, 0.5 ohm internal impedance. For driving low-level 25 to 250 ohm microphone inputs. Headphone: Two-level, for 600 to 2,000 ohm headphones. Crystal headphones may be used. Operating Voltage: MODEL M63: AC Operation: 108-132 volts, at 50 to 60 HZ. DC Operation: 30 volts, 20 ma.

23、maximum drain for +8 dbm output. MODEL M63-2E: AC Operation: 220-260 volts, at 50 to 60 HZ. DC Operation: 30 volts, 20 ma. maximum at +8 dbm output. The Model M63-2E is supplied with a three- conductor power-line cord, but no plug. The power-line cord plug should be installed by a qualified person.

24、The brown lead should be con- nected to the “live” or “hot” terminal of the plug, and the blue lead to the neutral terminal of the plug. The green/yellow lead is the ground- ing conductor and should be connected to the ground or earth terminal of the plug. UL and CSA: The M63 is listed by Underwrite

25、rs Laboratories, Inc. and is listed by Canadian Standards Associ- ation as certified. Overall Dimensions: See Figure “B.” Weight: 3 Ibs. 2 ozs. (1.4 kg) Operating Temperature: -7C (20F) to 57C (135F) Guarantee: This Shure product is guaranteed in normal use to be free from electrical and mechanical

26、defects for a period of one year from the date of purchase. Please retain proof of purchase date. This guarantee includes all parts and labor. Shipping Instructions: Carefully repack the unit and return it prepaid to the factory. If outside the United States, return the unit to your dealer or Author

27、ized Shure Service Center for repair. The unit will be returned to you prepaid. OVERALL DIMENSIONS FIGURE B 2 RadioFans.CN 收音机爱 好者资料库 VU METER When the METER SENSITIVITY switch (on rear panel) is on the 0 VU = 8 dbm FIXED position, an output of 8 dbm on the 600 ohm line output (loaded with 600 ohms)

28、, reads 0 VU on the meter. When the METER SENSITIVITY switch is in the 0 VU VARIABLE position and the 0 VU LEVEL ADJUST control is maximum (fully clockwise), an output of 4 dbm on the 600 ohm line output (loaded with 600 ohms) reads 0 VU on the meter; at min- imum position of the 0 VU LEVEL ADJUST,

29、fully counter clockwise, an output of approximately -20 dbm on the 600 ohm line output (terminated in 600 ohms) reads 0 VU on the meter. The variable position on the meter sensitivity switch allows the VU meter to read 0 VU for outputs ranging from -20 dbm to +4 dbm (600 ohm line terminated), by adj

30、usting the 0 VU level adjust (screw driver adjustment on rear panel). To calibrate the VU meter properly in applications where a level other than the fixed level is needed, set the VOLUME control on the M63 until the meter de- flects to the 0 VU position on the loudest peaks, then adjust the 0 VU LE

31、VEL ADJUST control for the desired output signal level. The LEVEL ADJUST control attentuates all outputs simultaneously (except HEADPHONES), while the internal circuitry operates at the proper level to insure good signal-to-noise ratio. ACCESSORY 30 V.D.C. The rear panel jacks (located near power co

32、rd) provide 30 volts DC for accessories such as the Model A68P Phono Cartridge Preamplifier. These jacks also are used as a power input when using the A67B Battery Power Supply. CONTROLS Volume Control Front panel control designated VOLUME controls overall output of both high level inputs and func-

33、tions as a master volume control. When the input device has a volume control of its own, the best signal-to-noise ratio is obtained by turning up that control as high as possible without encounter- ing distortion, keeping the M63 VOLUME control low. Tone Controls Front panel controls designated BASS

34、 and TREBLE are standard function tone controls having a re- sponse characteristic as shown in Figure C. FREQUENCY IN HERTZ FREQUENCY RESPONSE IN dbTONE CONTROL CURVES LO-CUT AND HI-CUT SET ON FLAT POSITION. FIGURE C Filter Controls Front panel controls designated LO CUT (Hz) and HI CUT (Hz) are con

35、tinuously variable low pass and high pass filters (6 db per octave) with a typical response function as shown in Figure D. FREQUENCY IN HERTZ FREQUENCY RESPONSE IN db-LO-CUT AND HI-CUT CONTROL CURVES BASS AND TREBLE CONTROLS SET AT 12 OCLOCK POSITION. FIGURE D Combining Tone and Filter Functions The

36、 BASS and TREBLE control response charac- teristic and the LO CUT and HI CUT response characteristic may be combined to obtain a variety of overall curves, sometimes needed for special effects involving room acoustics, equipment equal- ization, etc. Figure E shows an example of com- bining these fun

37、ctions. FREQUENCY IN HERTZ FREQUENCY RESPONSE IN dbCOMBINING TONE CONTROL AND FILTER CURVES. FIGURE E 3 RadioFans.CN 收音机爱 好者资料库 In this case, the upper dashed lines show BASS and TREBLE control position; the lower dashed lines show HI CUT and LO CUT control settings. The solid curve is the combined

38、resultant response of all settings. The resultant response is obtained by subtracting the lower curve (in db) from the upper set of curves. For instance, at 100 Hz the lower curve is 9 db below the 0 Reference line; subtract 9 db from the upper curve at 100 Hz (lowering it to 5 db above the 0 Refere

39、nce). The resultant curve shown might be typical of a sound system where low frequency noise was a problem (stage noise, etc.) and the room was rel- atively dead (heavily draped and carpeted). The low frequency roll off would keep objectionable thumping noises to a minimum, while the slight increase

40、 in response at 200 Hz will keep the system from sounding tinny. The rise in the high frequencies will add some presence so voices or music will have added clarity. This is only one example of the response curves available with the M63. An individual calculation can be done in this manner for the ot

41、her resultant curves. OPTIONAL ACCESSORIES A68P PHONO-PREAMPLIFIER The A68P is a monaural pre-amp which may be used to convert an input of the M63 to an equalized phono input. It provides both equalization and preamplification, and is powered from the 30-volt DC power take-off provision. A68M MICROP

42、HONE PREAMPLIFIER The A68M Microphone Preamplifier provides a microphone input, either balanced low or high impedance, or a balanced bridging line input to the M63. The A68M output cable is connected to one of the M63 inputs. The A68M mounts on the left side of the M63 and receives its power from th

43、e M63 30-volt DC jacks. A68S STACKING KIT This accessory consists of brackets for vertical stack- ing of an M68 Series Mixer and an M63 (or any combination of Shure Mixers, or Controllers). An interconnecting cable for combining units is in- cluded. A68SC INTERCONNECTING CABLE This cable is a 12 in.

44、 (305 mm) long single-con- ductor shielded cable with a phono plug on each end for interconnecting an M63 and an M68 Series Mixer. A68C OUTPUT CABLE KIT The A68C Output Cable Kit provides a variety of output interconnection cables for use with the M63. Included are: one 15-foot (4.6m) two-con- ducto

45、r shielded cable with professional three-pin male and female audio connectors*, one 12 in. (305 mm) two-conductor shielded cable with pro- fessional three-pin female audio connector* and Hubbell twist-lock plug; one 12 in. (305 mm) single- conductor shielded adapter cable with professional three-pin

46、 female audio connector* and Amphenol type MCI connector; and one phone plug adapter for use with MCI connector. *Designed to mate with Cannon XL series, Switchcraft A3 (Q.G.) series or equivalent connector. A68R RACK PANEL KIT The kit consists of a 19 in. x 3 in. (483 mm x 89 mm) precut rack panel

47、and necessary hardware for rack mounting of the M63 with its cover in place. A68L LOCKING PANEL This panel fits within the front hood of the M63 cover and locks in place to prevent tampering with the front panel controls. A67H HANDLE/TILT STAND The A67H provides a convenient means of tilting the M63

48、 to permit better panel visibility and greater ease of operation in some conditions. In the locked (tilt) position, the front panel will be elevated about 20. In the free position, the A67H serves as a rugged carrying handle. A67B BATTERY POWER SUPPLY The A67B eliminates the need to connect the M63

49、Mixer to a wall outlet. The battery complement is three Eveready Type 222, 216, or equivalent 9 volt batteries. At room temperature, battery life is approximately 10 hours. AC60 ATTACH CARRYING CASE This case is compartmentalized and foam lined for an M63 and as many as four microphones, cables, adapters, and other accessories. 4 LAMP REPLACEMENT 7. 8. 9. 10. 11. 12. 13. PARTS PLACEMENT 1. 2. 3. 4. 5. 6. DISCONNECT A.C. CORD. REMOVE 4 PHILLIPS HEAD SCREWS RETAINING COVER- ONE ON FRONT, ONE ON BACK, TWO ON BOTTOM, REMOVE COVER. REMOVE SCREW AND NUT BETWEEN VU METER BRACKETS. GENTLY PUSH